tonight, senators mitch mcconnell and harry reid are talking about a potential compromise to avoid the fiscal cliff. mcconnell believes there could be a tentative agreement by sunday. this progress comes after president obama met with congressional leaders at the white house today for about an hour. >> i'm modestly optimistic that an agreement can be achieved. nobody's going to get 100% of what they want, but let's make sure that middle class families and the american economy and, in fact, the world economy, aren't adversely impacted because people can't do their jobs. >> if there is no deal, taxes will go up next week for most americans. there will be sharp spending cuts and 2 million people will lose their extended unemployment benefits. >>> on "meet the press" this sunday, president obama will sit down for an exclusive interview with david gregory as the fiscal cliff deadline approaches. watch the interview this sunday morning at 10:30 here on nbc 4. >>> a huge turnout at the what's called the nation's gun show in shantilly, virginia, today. thousands of people attended. some vendor